Pet sofa



FIG. 1 is a perspective view of a pet sofa in accordance with my design;

FIG. 2 is a front elevational view of the pet sofa of FIG. 1;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof taken from the left side of FIG. 1; and

FIG. 5 is a side elevational view thereof taken from the right side of FIG. 1;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the drawings illustrate portions of the pet sofa that form no part of the claimed design. 

CLAIM The ornamental design for a pet sofa, as shown and described. 